Thin slider for one sided separable fastener stringers



3,050,804 THIN SLIDER FGR SIDED SEPBLE FASTENER STRIIQGERS Louis H. Morin, Bronx, N.Y. (125 Beechwood Ave., New Rochelle, N.Y.) Filed Dec. 8, 1960, Ser. No. 74,500 Claims. (Ci. 24-20514) This invention relates to What I term a thin slider, that is to say, a slider adapted for use in conjunction with separable fastener stringers, wherein the scoops of the stringers are disposed on one side surface only of the stringer tapes. More particularly, the invention deals with a slider of the character described employing a locking spring fixed to the body of the slider for retaining the slider in different positions on the stringers.

Still more particularly, the invention deals with a slider structure employing a spring actuating element operated by a conventional pull in movement of the locking spring into inoperative position in movement of the slider along the stringers to couple the sco ps of the stringers.

The novel features of the invention will be best understood from the following description, when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed and, in which, the separate parts are designated by suitable reference characters in each of the views and, in which:

FIG. 1 is an enlarged plan view of a slider made according to my invention, with parts of the construction broken away and in section and omitting the slider pull.

FIG. 2 is a section, generally on the broken line 2-2 of FIG. 1, illustrating the pull in partial section and showing the actuating element in elevation;

FIG. 3 is a section, generally on the line 33 of FIG. 1, omitting part of the background showing and diagrammatically illustrating the stringers of a separable fastener.

FIG. 4 is a section on the line 4-4 of FIG. 2, with part of the construction broken away.

FIG. 5 is an enlarged longitudinal sectional view through a modified form of slider showing the actuating element in elevation; and

FIG. 6 is a partial section on the line 6-6 of FIG. 5.

The sliders forming the subject matter of this application I term thin sliders adapted for use in conjunction with separable fastener stringers, generally of the type and kind disclosed in my prior application Serial Number 42,308; filed July 12, 1960, and, in FIG. 3 of the drawing, I have shown a diagrammatic sectional view through a pair of coupled separable fastener stringers of a slightly modified form, the stringer tapes being shown at 10, 10', these tapes each having two beads 11, 11' on one surface of the stringers 10, 10. To these beaded surfaces are attached scoops, diagrammatically illustrated at 12, 12, the coupling head of the scoop 12 being indicated by the dotted line 13 and the coupling head of the scoop 12 being indicated at 13', these heads being in coupling engagement along the abutting edge portions 14 of the stringer tapes.

In FIGS. 1 to 4, inclusive, I have shown one adaptation of my invention and, in these figures, 15 represents a slider body, comprising an unflanged wall 16 and a flanged wall 17, side flanges of which are indicated at 18 in FIG. 1 of the drawing. It will appear, from FIG. 1 of the drawing, that side edges 19 of the contracted end portion of the wall 16 are in alinement with inner surfaces 20 of the flanges, as clearly seen at the left of FIG. 1 of the drawing; otherwise, the wall 16 conforms generally to the contour of the wall 17, particutat 'ment to uncouple the stringers.

larly at the end portion of the slider including the web 21 which integrally joins the walls 16 and 17.

The wall 16 has a raised central longitudinal rib portion 22, particularly at the Wider portion of the slider and this raised portion extends to the contracted end of the wall 16 in a long taper, as seen at 23 in FIG. 2 of the drawing. The raised portion 22 has a protruding rounded lip 24. The Web end of the slider has a recess 25. The recess 25 registers with another elongated recess 26 in the outer surface of the wall 17, the latter recess registering with two angularly and transversely spaced apertures 27 and 23 in the wall 17. Mounted in the recesses 25 and 26 is a generally U- shaped locking spring 29, the end portion 39 of which has its end abutting the lip 24 and is fixed to the portion 22 by an integral rivet portion 31 on the enlargement 22, as clearly indicated in FIG. 2 of the drawing. The crosshead 32 of the spring 29 is also fixed in the recess 25 by a corresponding rivet 33 integral with the web 21. The end portion 34 of the spring is the free spring arm of the locking spring and this arm has, at sides thereof, integral locking lugs 35 and 36 which normally extend into the apertures 27 and 23, respectively, and project into the channel 37 of the contracted end portion of the slider to operatively engage the scoops I2, 12, note FIG. 3, in retaining the slider against movement on the stringers 10, 19.

It will be apparent from a consideration of FIG. 2 of the drawing that the lugs 35 and 36 are generally triangular in form and include bevelled surfaces 38 and 38, respectively, which permit free movement of the slider along the stringers in the operation of coupling the stringers; whereas, the straight perpendicular surfaces 39 and 40 of the lugs 35 and 36 serve to engage the scoops in positively locking the slider against move- Considering FIG. 3 of the drawing, it will be apparent that the flanges 18 in the construction shown are rounded to engage rounded sides of the scoops shown.

The wall 16, including the enlargement 22, has an aper ture 41 therein which extends beyond the forward edge 21 of the web 21. The aperture 41 includes a reduced portion 42 which opens into the channel 37 forwardly of the end 21 of the Web, as clearly illustrated in FIG. 2 of the drawing. Disposed centrally with respect to the reduced portion 42, the Wall 17 includes an aperture 43 opening through the outer surface of the wall and this aperture is normally closed by the free spring arm side 34 of the lockingspring 29. Arranged in the apertures 41, 42 and 43 is a spring actuating element 44. This element has a central portion 45, generally triangular in cross-sectional form, as will appear from a consideration of FIG. 1 of the drawing, and actually forms a reduced extension to the web 21 in guidance of the scoops into the channel 37, as is common With sliders of the kind under consideration. The element 44 has a reduced pin end 46 positioned in the aperture 43 and operatively engaging the spring arm 34. The other end of the element 44 has an enlarged head 47 with a tapered outer surface 48 normally disposed in the aperture 41. It will appear, from a consideration of FIG. 2 of the drawing, that the rounded crosshead end 49 of the pull 50 is arranged in the aperture 41 and operatively engages the tapered or cam surface 48 of the plunger-type actuating element 44 to move the pin end 46 outwardly in movement of the spring arm 34 sufiiciently to move the lugs 35 and 36 out of the channel 37 to clear the scoops for free movement in the channel 37.

It will appear that the triangular portion 45 forms a shoulder 51 at one side of the pin to operatively engage the wall 17 in checking outward movement of the element 44. Normally, the spring arm 34 serves .to maintain 9 a the central triangular portion 45 in the channel for guidance of the scoops through the slider, as will be apparent.

In FIGS. and 6 of the drawing, I have shown a modified form of slider, the two Walls of which are indicated at 52 and '53 and 54 represents the web joining these walls. .The wall 52 has the side flanges 55, one only of which is indicated in FIG. 5, these flanges being generally similar to the flanges 18. a

The wall 52 has an outwardly extending portion 56 forming a deep recess 57, in which the spring arm end 34' of a locking spring 29' is arranged. The locking spring 29' is generally. of the structure shown in FIGS. 1 to 4 and mounted in the same manner, the arm 34' differing from the arm 34 in having a single angularly oifset scoop engaging portion 58 operating in an aperture 59 in the wall 52, as clearly illustrated in FIG. 5 of the drawing.

The enlarged portion 64) of the wall 53 difiers from the enlarged portion 22. In the enlarged portion 66 is an aperture 61, in which the crosshead end :9 of a pull 50, generally similar to the pull 50, is arranged to operatively engage an offset end portion 62 on an actuating element 63. The element 63 is in the form of a lever having a rounded pivot end 64 operating in a socket 65 formed in the web, the web being recessed to receive the pivot end portion of the element 63, as clearly noted. The ofiset end portion 62 of the element 63 is arranged in an aperture 66 in the Wall 53 and in a recessed end portion 67 of the web 54. It will, thus, be apparent that, in movement of the pull 50' in the direction of the arrow 68 of FIG. 5, the lever element 63 will be swung on its pivot 64 to raise the corner portion 69 thereof, thus moving the spring arm 34 sufficiently to clear the scoop engaging end portion 58 from the channel 70 of the slider, thereby permitting free movement of the slider along the stringers.

The inclination of the end portion 58 forms an angular surface 71 which will allow the arm 34' to spring outwardly in movement of the slider along the stringers in separation of the stringers; whereas, the end 72 will provide a positive checking engagement with the scoops in preventing accidental movement of the slider along the stringers.

' Considering FIG. 6 of the drawing, it will appear that the element 63 is .of common thickness throughout its length and the aperture 66, recess 67 and aperture 73 in the wall 52 will conform with this contour of the element 63 in providing snug, but free, movement of the element in the slider body. The spring arm 34' serves to normally support the element 63 in the position shown in FIG. 5. It will be apparent, however, that outward movement of the spring arm 34' is checked by engagement of the oifset end 62 with the end wall 61 of the aperture 61.

For purposes of description, the flanged wall 17 may be said to define the scoop engaging wall and the wall 16 may be said to define the stringer tape engaging wall, the inner surface of the latter being preferably flat for free guidance of the stringers 10, into the channel portion of the slider, as will clearly appear from a consideration of FIG. 3 of the drawing.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A slider of the character described, comprising a body having spaced walls joined at one end in a connecting Web, one wall having flanged sides defining the channel of the slider body, the walls of the slider body having alined apertures at the inner end portion of said web, a U-shaped locking spring arranged upon outer surfaces of both walls and over the outer end of said web, means fixing one end portion of said spring to the other of said walls, means fixing a crosshead of the spring to the outer end of said web, the other end portion of the spring being free to form a spring arm flexing with respect to said first named wall, the first named end of the spring forming a closure to the aperture in the second named wall, a pull having apart operating in the aperture of the second named wall inwardly of the first named end of said spring to operatively engage'the end portion of a spring actuating element disposed in said aperture, the other end portion of said element engaging said spring arm, whereby in actuation of the pull for movement of the slider in one direction said element is actuated to. move said spring arm into'extended position with respect to said first named wall, and said spring arm including scoop engaging means normally disposed in the channel of the slider body and move into position to clear the channel in outward flexing of said arm by said element.

2. A slider as defined in claim 1, wherein said element comprises a lever having means pivotally mounting the same in said web and including a portion engaging said spring arm, and said lever including a part arranged in the aperture of the second named wall operatively engaged by the pull for actuating the lever in flexing said spring arm.

3. A slider of the character described, comprising a body having spaced walls joined at one end in a connecting web, one wall having flanged sides defining the channel of the slider body, a U-shaped spring adapted to closely embrace the web end of said slider between the legs of said U with one arm of said U-spring arranged upon the flanged wall and including scoop engaging means extending through an aperture in said wall into the channel of the slider body and the other arm arranged upon and.

secured to the other wall of said side, a spring arm actuating element movably mounted in the slider body at the forward portion of said web, said element being of J- shape, a pivot point in said web adapted to receive the outer end of the short leg of said J-shaped element, said spring arm and said element juxtaposed so that the former serves to hold the latter in place within a recess in said web, a pull movably supported in the other wall of the slider body and operatively engaging said element at the end of the long arm of said J-shaped element in flexing the spring arm away from the flanged wall in movement or" said scoop engaging means out of the channel of the slider body for free movement of the slider along a pair of stringers, and one leg of said U-shaped spring adapted to hold a portion of said pull in assembled position with the end of the long leg of said J-shaped element.

4. A slider of the character described, comprising a body having spaced walls joined at one end in a connecting web, one wall having flanged sides defining the channel of the slider body and the other wall being without flanges, a spring arm arranged upon the flanged wall and including scoop engaging means extending through an aperture in said wall into the channel of the slider'body, a spring arm actuating element pivotally mounted in the slider body at the forward portion of said web, said element being of J-shape, a pivot point recessed in said web adapted to receive the outer end of the short leg of said J-shaped element, said spring and said element juxtaposed so that the former serves to hold the latter in place within a recess in said web, and a pull movably supported in the unflanged wall of the slider body and operatively engaging one end of said element in flexing the spring arm away from the flanged wall in movement of said scoop engaging'means out of the channel of the slider body for free movement of the slider along a pair of stringers.

' 5. A slider of the character described, comprising a body having spaced walls joined at one end in a connecting web, one wall having flanged sides defining the channel: 7

of the slider body and the other Wall being without flanges, a spring arm arranged upon the flanged wall and including scoop engaging means extending through an aperture in said wall into the channel of the slider body, a spring arm actuating element pivotally mounted in the Web of the slider body, said element being of J-shape, a pivot point in said web adapted to'receive the outer end of the short log of said J-shaped element, said spring and said element.

juxtaposed so that the former serves to hold the latter in place within a recess in said web, and a pull movably supported in the unflanged Wall of the slider body and operetively engaging said element to cause it to pivot about said pivot point in flexing the spring arm away from the flanged Wall in movement of said scoop engaging means out of the channel of the slider body for free movement of the slider along a pair of stringers.

References Cited in the file of this patent UNITED STATES PATENTS 2,178,948 Brozek Nov. 7, 1939 Carlile June 29, 1943 Weber July 6, 1957 FOREIGN PATENTS France Sept. 2, 1938 Great Britain Nov. 12, 1940 

